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Tetrazine ring is an energetic nitrogen hexa-heterocyclic group with nitrogen mass fraction of 68.3%,so it is a very effective structure unit in the design of high energetic,insensitive materials. 四嗪环是一种含氮质量分数达68.;3%25的六元氮杂环含能基团;是设计高能钝感含能材料中非常有效的结构单元;
nitrogen mass fraction 氮含量
Total mass fraction of EPA and DHA can give 28.32%. EPA和DHA乙酯总含量（w）达到28?32%25。
The mass fraction of isocyanurate was calculated by piperidine method. 采用六氢吡啶法测出了异氰腺酸酯的质量分数。
The influence of paint coating number, mass fraction of diluent on film thickness and glossiness was studied. 研究了涂料涂装道数、稀释剂的质量分数对涂膜厚度和光泽度的影响。
For the conditions shown, maximum performance occurs at an additive mass fraction of 23%. 在所给定的条件下，最大性能是添加剂质量分量的23%25处。
On the other hand, the mass fraction of TFE in the initial solution decreases and saves the cost of solution. 充注溶液所需TFE质量分数降低，溶液初投资减小等。
The mass fraction of n-butene in mixed C4 from catalytic cracking after etherized was approximately 40%. 醚化后的催化裂化混合C4中含有质量分数约为40%25的正丁烯,是生产丙烯的优质原料。
The heat, cold and water resistances are improved with the increasing mass fraction of polysiloxane in copolymer. 随着硅氧烷质量分数的增加，该共聚物的耐热性、耐寒性和耐水性均得到提高。
The conversion of amorphism was the highest when the mass fraction of KOH was 8% and CH3COOK was 45%. 当KOH质量分数为8%25、乙酸钾质量分数为45%25时，油母页岩粉体的无定形转变率最高；
The EDAX composition analysis demonstrates that the mass fraction of Y2O3 is closely related to ore-collophane. 通过EDAX能谱仪进行矿物成分分析，得出Y2O3质量分数与胶磷矿物密切相关的结论。
When the mass fraction of the censphere was up to 18%, the impact strength of the composite would be the maximum. 当微珠质量分数达到18%25时，材料冲击强度达最大值。
Examples are given to differentiate quantity ratio and mass fraction,mol ratio and mol fraction,cuba. 例析了比率相关量如质量比与质量分数、摩尔比与摩尔分数、体积比与体积分数的区别。
The mass fraction normalized conductivity method can be used to measure the colloidal stability of residue. 质量分率电导率法可以用来表征渣油样品的胶体稳定性。
The Izod notched impact strength of PMMA modified by ACR increased by 42.42% when the ACR mass fraction was 5%. 当ACR质量分数为5%25时，改性PMMA的缺口冲击强度比未改性的提高了42.;42%25。
The optimum content of sepiolite in the coating is 2.88% (mass fraction) by colligating various factors. 当海泡石用量为2.;88%25（质量分数）时，水性钢结构防火涂料的综合性能较好。
The dispersion temperature could be more effective than the mass fraction of DMPA. 水分散温度的作用较DMPA更为明显。
The results showed the content of BPO, the mass fraction of VA had effects on the shape memory property of SMP. 通过对材料的形状记忆性能研究,发现BPO用量、醋酸乙烯酯(VA)质量分数都能影响材料的形状记忆性能;
When the mass fraction of nano-ATO was 5%,the composites had excellent mechanical properties. 当纳米ATO的质量分数为5%25时,复合材料具有良好的物理机械性能;
Air consists chiefly of nitrogen. 空气主要由氮气组成。